Now I remember... I agree that when a 120V load is balanced the neutrals would cancel out in single phase, but would ADD vectorilly in 3phase as Mike stated earlier. I will ensure that the neutral is sized accordingly. Many thanks guys.
Hi Mike. Thank you for the feedback. I understand that the neutral from the transfer switch to the panel would have to support the greater load as you mention above. However, I am still uncertain what you mean exactly by the statement, "When running on 120/208 volts network from your generator...
Thanks waross! I agree that the large loads are 230V and would not draw significantly from the neutral (as with normal split phase). My single phase 120V loads consist mainly of lighting and some small electronic equipment. Nothing that would exceed a total load of 50A. I expect that the...
Thanks Mike and waross! I was planning on connecting the three existing utility supply lines to my house (120/240V, split phase plus neutral) directly to the output of the transfer switch. The inputs to the switch would come from the genset (L1, L2 and neutral) and new 120/240V split phase lines...
Thanks for the advice Waross. I will move forward with the unbalanced load approach, since that is the simplest one now that I know it is safe. I sized the genset at 20kW knowing that I would only need to support a maximum load of 12kW at single phase 120/240 (should it be deemed necessary to...
I have generic 12-wire diagrams and am familiar with the rewiring process but not on this old-style Delco generator. I was looking for some help to determine if I should move forward with the unbalanced loading scheme outlined above or if someone with experience with this particular unit could...
I purchased a rebuilt rail car genset with a 20kW/25kVA 3phase DELCO E-5399M2 (powered by a Detroit Diesel 2-71) as standby power for my home. I intended to use two lines (plus neutral) to provide 120V/208V to my split-phase 120V/240V panel through a transfer switch. I am concerned how the...
