Silght apprehension yesterday (Friday) installing a replacement D-50 Expansion Module because it was used. Made sure my work order in writting said so. It’s the unit 3rd from left. This switch board controls what feed powers vault-3 (west 1/4 of runways/taxiways and related equipment). Two house powers and one generator with closed transitioning. Supposely getting new parts from different vendor through different requisiting that takes much longer. The oringal problem was the generator start contacts didn’t always make up. It was somewhat imbarassing how we (2 others and I) figured it out. Apparently the “D-50s” are no longer being made?
ElectricianTalk.com - Are you a Professional Electrical Contractor? If so we invite you to join our community and see what it has to offer. Our site is specifically designed for you and it's the leading place for electricians to meet online. No homeowners asking DIY questions. Just fellow tradesmen who enjoy talking about their business, their trade, and anything else that comes up. No matter what your specialty is you'll find that ElectricianTalk.com is a great community to join. Best of all it's totally free!
The topics covered on this site include activities in which there exists the potential for serious injury
or death. ElectricianTalk.com DOES NOT guarantee the accuracy or completeness of any information contained
on this site. Always use proper safety precaution and reference reliable outside sources before attempting any construction or remodeling