Model # PB30

Internet #202213702

Store SKU #725625

Reliance Controls 30 Amp Power Inlet Box

Reliance Controls

30 Amp Power Inlet Box

  • Outdoor rated plugin box for a portable generator
  • To connect a generator to a transfer device for backup power
  • 30 amp 4-wire L14-30 style power inlet
$5398 /each
store icon Loading Buying Options...
package icon Loading Buying Options...
Sorry, but we ran into issues loading these options. Please try refreshing.

Frequently Bought Together

Product Overview

The Reliance Controls 30 Amp Power Inlet Box is designed for outdoor use and can be hardwired directly to a manual transfer switch or transfer panel, eliminating the need for cords running through windows or doors. This raintight unit includes a flanged inlet plug, an inlet cover and 4 combination knockouts.

  • Connects a generator cord to a manual transfer switch or transfer panel
  • Raintight metal cover ideal for outdoor mounting
  • NEMA L14-30P rated flanged inlet plug
  • 30 Amp s, 125/250 VAC, 7,500 watts
  • Generous wiring space facilitates rough-in
  • UL listed
  • Face of the box is removable for fast installation
  • 4 combination 1/2 in. and 3/4 in. knockouts

Info & Guides

You will need Adobe® Acrobat® Reader to view PDF documents.  Download a free copy from the Adobe Web site.



Product Depth (in.)
Product Height (in.)
Product Width (in.)


Electrical Product Type
Power Inlet Box
Maximum Amperage (amps)
Product Weight (lb.)
Voltage (volts)

Warranty / Certifications

Certifications and Listings
1-UL Listed
Manufacturer Warranty
5 years

More Products With These Features


Customer Questions & Answers

What type of connection / plug is used at the generator to feed a 230 volt load?

Asked by: Anonymous
the best way to obtain a correct ( plug ) is to do it at the time of a generator purchase. TRY it, before you buy it. should you HAVE a generator without a manual, look at the design of the connection at the generator output panel. MAKE a sketch, look close, record details, go to local HD store, ask for help, buy one. DO NOT discard your receipt .ELECTRICAL devices can NOT be returned if they are USED.
Answered by: RUVO
Date published: 2015-09-20

Will this work on a 3500 watt generator

Asked by: Lonepine35
This inlet box can handle 3600 watts on each leg (# 10 wire required ) for EACH device connector. You MUST have each connection used to give proper AND legal use. Let us explain. THIS box needs a cable with FOUR wires in it. The plug cap and connector must fit your generator and the inlet box. Are you OFF GRID ? If NOT, DO NOT connect this generator directly into your LOAD CENTER. Review ALL this information with a person that is QUALIFIED to assist you. Go to your local Home Depot, and take the booklet for your generator with you. Having installed many of such items, I suggest a LARGER rated generator. to keep you running for the LONG haul. Your engine will not labor under demand of a starting load, and the unit will last longer. Take a few minutes and total all the things you NEED to keep running . That will be your wattage demand.
Answered by: RUVO
Date published: 2017-02-14

Operating in Rain

Is this Power Inlet Box water tight enough to operate in the rain while plugged in ? Thank you.
Asked by: Mike
sumtime a swimmin noodle can be cut to fix stuff and buld stuff like round power cord gaskets
Answered by: rookie
Date published: 2017-06-24

what size wire would I use to hookup a 30 amp power Inlet box

Asked by: whiz
Use number 10 wire. HOWEVER should you exceed 100 feet to the termination point, go to the next size larger wire. REMEMBER, you MUST use all terminals ( that means four conductors ). NOW the tricky question. Where will this WIRE be run. UNDERGROUND, ( UG ), IN CONDUIT, PVC or EMT, with a aerial for above ground ( point A to point B ) OR the must common , inside a structure ( MN ). ???? IF this is for backup power do it right the first time. PS DO NOT forget the TRANSFER switches for a smooth and safe trans fer of energy. Check local code if you need to DIG a trench. CALL BEFORE YOU DIG.
Answered by: RUVO
Date published: 2017-04-30
  • y_2017, m_7, d_17, h_9CST
  • bvseo_bulk, prod_bvqa, vn_bulk_1.0.0-hotfix-1
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_8
  • loc_, sid_202213702, prod, sort_[SortEntry(order=NUM_ANSWERS, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING), SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING), SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING), SortEntry(order=BEST_ANSWER_FEEDBACK_COUNT, direction=DESCENDING), SortEntry(order=POSITIVE_ANSWER_FEEDBACK_COUNT, direction=DESCENDING), SortEntry(order=NUM_ANSWERS, direction=DESCENDING)]
  • clientName_homedepot
  • bvseo_sdk, java_sdk, bvseo-3.1.1
  • CLOUD, getContent, 18ms

Customer Reviews

30 Amp Power Inlet Box is rated 4.7 out of 5 by 67.
Rated 5 out of 5 by from Quality product. Simple enough install. Can be wired through the back of the unit, making for a v... Quality product. Simple enough install. Can be wired through the back of the unit, making for a very clean install. Much nicer than running a cord inside from out at your portable generator.
Date published: 2017-01-17
Rated 5 out of 5 by from Good product. The only negative is the box is a little small. Hard to get #8 wires in there. Good product. The only negative is the box is a little small. Hard to get #8 wires in there.
Date published: 2017-04-18
Rated 5 out of 5 by from Inlet box Met my requirements. Easy install. Clear instructions.
Date published: 2017-05-23
Rated 5 out of 5 by from As described, great construction perfect for my needs ... As described, great construction perfect for my needs
Date published: 2017-04-19
Rated 4 out of 5 by from Was exactly what I needed... Was exactly what I needed
Date published: 2017-01-24
Rated 5 out of 5 by from This box is a great inlet for your generator After going through three hurricanes, I decided that I did want a generator to provide power for the refrigerator and the television. We found that you really need the TV to keep track of where gasoline is and when power is likely to be restored and what is in your neighborhood in the way of storms. Without an inlet box like this, you wind up with extension cords either through a window or through a door. In either case, you now have mosquitos. With this box on the outside, and a 2 gang duplex outlet on the inside, I was able to take the 240 volt 2 phase power into the inside of the house where it became 2 120v duplex outlets. My generator only puts out 2 120 volt circuits that are each limited ot 15 volts by circuit breaker if you use the L14-30R outlet that this box enables you to get to the house. I used a heavy duty 10 awg extension cord, also from home depot, from the generator to this box so that there is very little voltage drop getting to the inside extensions to the refrigerator, TV and satellite receiver, Computer, printer, cable modem, fans and lights. This box is a critical item for the storm preparations.
Date published: 2011-06-12
Rated 5 out of 5 by from Great Generator Power Inlet Box for a Mobile Home It was a bit daunting for a basic DIY guy like me, but I got everything I needed to connect my emergency power generator to my load center (aka fuse box), and this Power Inlet Box from Reliance Controls is the centerpiece. It is super solid and high quality, and pretty much immune to rain when closed. I recommend using it with a matching twist-lock L14-30 connector also from Reliance Controls for maximum electrical contact. ( Model # L1430C Internet # 202216503 ) I used 6 gauge wire (I like to over-spec) which was a struggle to rout neatly in the box but the connections are rock-solid. Remember if you are going to connect a generator to your load center you also need a Generator Interlock to be safe and legal. This makes sure you cannot switch on both the generator and the grid feed at the same time.
Date published: 2015-09-16
Rated 5 out of 5 by from Well designed and documented product This product was purchased in addition to Reliance's transfer switch kit. Both items are very well designed and documented. They are straightforward to install and well designed.
Date published: 2011-10-04
  • y_2017, m_7, d_16, h_21
  • bvseo_bulk, prod_bvrr, vn_bulk_1.0.0-hotfix-1
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_67
  • loc_, sid_202213702, prod, sort_[SortEntry(order=RELEVANCE, direction=DESCENDING)]
  • clientName_homedepot
  • bvseo_sdk, java_sdk, bvseo-3.1.1
  • CLOUD, getContent, 19ms