Power cable connection on a mobile installation to External equipment using a MIL-DTL-38999 connector.

This all rather depends on what it is used for and how,
As one who designs a lot of green (or beige) equipment with Mil Std 38999 connectors, I'd consider that they are not anything special, except that the power handling and robustness for a given size is a bit better than the average IEC mains inlet ;-)  (NB some of the socket pin patterns are not touch-proof - do you know insert which pattern is it - there are far too many variants for comfort ?) 

They are however  very strong against being trodden on and even run over  (well by tyres at least), and  depending on the back shell arrangements and if they are gel filled or not, they can be very good in the wet as well, and are available in a selection of non-shiny finishes that dont attract sniper fire ;-)
But in terms of domestic mains, where none of that applies, they are not really ideal and not normally the first choice, as well as being very expensive and needing special crimp tools to fit.

So ---
Are the connectors intended only to be disconnected  as part of equipment breakdown for transport, i.e. when in use is the mains lead remains essentially captive when fitted ?
Is the cable a kind that could be easily damaged in a way that exposes a mains live core, or is the cable provided with an earthed braid or armour.

If the answer is that it gets unplugged regularly by untrained/unskilled personnel, or that the lead is soft skinned and vulnerable to trapping or puncture, then if it is carrying mains, some additional protection really is needed and the RCD uplift is unwise.
If the kit is to be used outdoors in all weathers then that is a further risk compounding factor.

Of course if the lead only carries a much lower voltage or is essentially protected along its length or indoors the risk is probably quite acceptable.

A bit more info may help clarify where between the extremes this lies.

Mike.

Sorry to be so generic but there is only so much I can say. The connector is TV07ZN13-E4P and it's mating half. I've done a risk assessment and there is no risk of electrocution by touching the pins. The personnel are trained on the equipment so they are skilled up to a point. It is set up used then torn down. Protocol is to turn all power off for that connection before it is disconnected. There is also a continuity monitoring system that will cause the breaker to trip should the connection be lost in any way.

it's 230VAC.

Sorry to be so generic but there is only so much I can say. The connector is TV07ZN13-E4P and it's mating half. I've done a risk assessment and there is no risk of electrocution by touching the pins. The personnel are trained on the equipment so they are skilled up to a point. It is set up used then torn down. Protocol is to turn all power off for that connection before it is disconnected. There is also a continuity monitoring system that will cause the breaker to trip should the connection be lost in any way.

it's 230VAC.