High leg delta. There phase/single phase same OCPD

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MD84

Senior Member
Location
Stow, Ohio, USA
I have a 10KVA high leg delta SDS. The secondary lands in a 30A fused disco fused at 20A. This serves two 20A 3 phase twist lock receptacles in which lathes will be utilized. The lathes have a cord connected 120v digital readout.

Is it permissible to pull a nuetral and install two 120v receptacle on this circuit? Both the three phase receptacles and the single phase receptacles will be protected by the three pole fused disco.
 
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