Riddles in the Dark of Exilian

[Jubal]

Yup, correct (Tusk's second guess and CG's first one) - well done guys. 

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I, a snow of darkling white, Ash does fall and build up kinda like snow but with dark bits
Shall fall beneath a glowing light, It builds up below the flames of a fire
For when his kingdom frost has got, That is, in winter
You'll make me though you want me not Nobody wants ash - they want the warmth from the fire
I may be made of mine own name, I was thinking this one because you can burn ash logs to make ash
So tell me, can you guess the same?

[Tusky]

Who's up. CG? I did one before jub

[comrade_general]

Not it.

[Jubal]

Looks like you're up again then Tusky

[Tusky]

Oops - forgot about this one. I shall get thinking 

[Tusky]

I go with the flow.
I break things, you know,
When doing my role.
To save you's my goal.
It may end my life,
and cause you some strife,
but deep down you know
I just went with the flow.

[Jubal]

First guess:

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White blood cell?

[Tusky]

Nope. Good guess!

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I guess it could fit the "cause you some strife" line in that in the process of fighting an illness you could get unpleasant symptoms. and "break things" could mean germ cells etc?

Not sure if a white blood cell specifically sacrifices itself in the line of duty, though, but then I am not a biologist.

[Jubal]

I'm not really sure what does break itself or die in the line of duty, it's a rather tricky one...

[Tusky]

Ah, it's tough to tell when something is too hard. I assume it's obvious since I thought of it!

Here is a clue then

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On line 2 where I said:

I break things, you know,

It is in reference to the "flow" mentioned on the first and last lines

[Glaurung]

A somewhat different guess...

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An emergency airbag in a car

[Tusky]

Nope. Good guess.

[Glaurung]

Hmm. Two more guesses, then:

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either: a breakwater for a harbour (but I can't see how that would "go with the flow")
or: a sacrificial electrode (usually anode) for a piece of maritime equipment

[Tusky]

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Your second guess is very close - and I'm very tempted to give it to you. I had to google what they are, though... I'm not sure what a sacrificial electrode would break, other than itself? That would not fit with "things"

Here are 2 clues if you want to use them

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Every modern household is likely quite a few of these

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The thing being broken applies to both the "flow" mentioned on the first and last lines, and also the object it's in

[Jubal]

Oh, it's

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a fuse?